@article{FCAA_2004_7_4_a1,
     author = {Machado, J. and Jesus, Isabel},
     title = {Suggestion from the {Past?}},
     journal = {Fractional calculus and applied analysis},
     pages = {403--407},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/FCAA_2004_7_4_a1/}
}